Professor Stretch is the Academic Leader for Land Surveying. He has a PhD in environmental fluid mechanics from Cambridge University, UK. He currently occupies the eThekwini-sponsored Chair in Civil Engineering and is Director of the Centre for Research in Environmental, Coastal & Hydrological Engineering.

His research group focuses on the bio-hydrodynamics of estuarine ecosystems, coastal and shoreline processes, and generally on the understanding and modeling of turbulence and mixing in environmental flows.